StrollMemo vs Sigma
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StrollMemo
This app serves as a personal walking journal, allowing users to capture thoughts and discoveries encountered during walks. It features a calendar view and thematic elements to help users document their experiences away from screens and reconnect with nature.
- Walking diary
- Calendar view for throwbacks
- Picture book design
- Walk-related themes
- Tagging places
- Offline journaling
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A few years back, I fell in love with walking. I love that chill vibe. It sparks cool thoughts and discoveries. Everything I jot down feels beautiful, and walking itself is a gem. So I created this app. Got a calendar view for easy throwbacks. Designed it like a picture book – think of it as your personal walking journal. Added some walk-related themes and places to tag. Hope it helps you jot down moments away from screens. Dive into nature, reconnect with yourself. --------------------------------------------- SUBSCRIPTION PRICING AND TERMS StrollMemo offers a subscription options: $9.99 per year These prices are for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. The subscription will automatically renew unless turned off in your iTunes Account Settings at least 24 hours before the current period ends. You can go to your iTunes Account settings to manage your subscription and turn off auto-renew. Your iTunes Account will be charged when the purchase is confirmed. Read the terms and conditions here: https://www.notion.so/aboutkoan/Terms-of-Use-09cbffbf45f24f01843416b6a8cff12f Read the privacy policy here: https://www.notion.so/aboutkoan/Privacy-Policy-502d95850c4a4cbd9288010f77838897
Sigma
This app offers a clean and engaging running experience with detailed analysis and personalized AI coaching. Track your runs, visualize your progress, and collect memories of your journeys on a unique map diary.
- Ad-free running experience
- Daily, weekly, and monthly analysis
- Map diary of runs and moods
- AI-powered personalized coaching
- Visualized calorie consumption
- Data migration from popular wearables
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我们是一群爱跑步的设计师，纯粹、仪式感、真正懂你 —— 这才是我们想给你的跑步体验。 【你最关心的功能】 - 清爽干净的开跑：全程无打扰，自由记录你的奔跑 - 好看有趣的记录：日/周/月的多维分析视图，记录你所有跑步轨迹的总和 - 点亮心情的地图日记：跑过的城市与心情，所有回忆都收藏在一张地图里 - 贴身指导的AI伙伴：结合北京体育大学知识库，基于你的历史数据提供专业分析与个性化建议 - 可度量的跑步数据：卡路里消耗的趣味可视化，配速对标动物世界的实力 - 历史数据一键迁移：已支持苹果、佳明、华为、小米、高驰、华米和颂拓手表 【官方账号】 官网：https://www.sigma.run 小红书：@Sigma 【隐私政策】 隐私政策：https://www.sigma.run/privacy
Screenshots
Verdict
The clearest difference is rating: StrollMemo at 5.0 against Sigma's 4.4. Sigma's advantage is in-app purchases (none vs 2) and review sentiment (86% vs 60%). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. StrollMemo sells 2 in-app purchases, starting at $2.99 per year. Sigma asks for nothing beyond the download.
StrollMemo holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Sigma has 47 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 60% of StrollMemo's written reviews are positive against 86% of Sigma's, so the app with the better star average is not the one people write more warmly about.
StrollMemo ships an update fortnightly, Sigma weekly. The most recent releases landed on September 23, 2026 and September 27, 2026 respectively.
| Parameter | StrollMemo | Sigma |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.4 (47 ratings) |
| Positive reviews | 60.0% of reviews | 86.0% of reviews — better |
| Number of ratings | 1 | 47 — better |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 217 MB |
| Age rating | 4+ | 12+ |
| Developer | Shenzhen Poplab Technology Co. Ltd. | Chaoshi Technology (Shanghai) Co., Ltd. |
Customer experience
StrollMemo
Sigma
In-app purchases
StrollMemo
- Annual subscription7 Days trial$2.991 Year
- Lifetime$4.99
Sigma
No in-app purchases
